FORESTRY
FOREST POLICY AND GOVERNANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oxygen, water & fuel
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Fuel, oxygen & ignition source (heat)
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Fuel, Carbon Dioxide & time
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Ignition source, carbon dioxide & moisture
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Detailed explanation-1: -Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
Detailed explanation-2: -Without sufficient oxygen, a fire cannot begin, and it cannot continue. With a decreased oxygen concentration, the combustion process slows. Oxygen can be denied to a fire using a carbon dioxide fire extinguisher, a fire blanket or water.
Detailed explanation-3: -Oxygen plays the role of oxidizer. It is a very good oxidiser. The process of combustion involves the oxidation of fuel by the oxidiser to liberate heat. Hence is it the oxygen that oxidises the fuel to give off heat.
Detailed explanation-4: -Essentially all four elements must be present for fire to occur, fuel, heat, oxygen, and a chemical chain reaction. Removal of any one of these essential elements will result in the fire being extinguished.